CKUCIFERJE. 40 BAKBAREA. 



calyx. The root-stock is long and large in proportion to the plant, beset with 

 teeth, with a pungent, arouiatic taste. May. Per. Pepper Root. 



2. D. LASCINIA'TA. Mh. D. concalinata. Mx. 



Lvs. 3, 3-parted, the divisions linear-oblong, incisely dentate; r/H":07nrt tube- 

 rose. In woods. The root-stock consists oi" connected tubers, of a pungent 

 taste. Stein a foot high, smooth. Leaflets sessile, deeply cut into very irreg- 

 ular mucronate teeth, the lateral leaflets cut nearly to the base, almost rendering 

 the leaves quinate. Flowers racemed, large, purplish. May. Per. Tooth-wort. 



3. D. ma'xima. k. 



Leaves many , (5 — 7.) alternate, petiolate, remote; I c 'i fl ct s suhovdA, incisely 

 and acutely dentate ; lateral ones lobed ; tuliers concatenate. In western N. 

 Y. Stem 1 — 2 feet high." Flowers pale purple. Per. 



6. NASTU'RTIUM. 



Silique subterete, shortish or cleclinate; valves nerveless ; 

 calyx equal, spreading; seeds in a double scries. 



A latin name, which according to Pliny, comes from nnsus tortus, from the 

 effect which the acrimony of these plants have upon the nose. Aquatic herbs. 



1. N. officina'le. 



Leaves pinnate; leaflets ovate, subcordate, repand. In brooks and ponds. 

 Stems decumbent, a foot high, thick, the branches axillary. Leaves alternate, 

 of :3 — 7 leaflets; leaflets broad, often cordate at the base, and somewhat acute 

 at the ends, very obtusely toothed, the terminal one the largest. Flowers 

 white. Siliques erect, about half an inch in length. This cress is said to be 

 in great demand in the vicinity of London as a salad. For this purpose it is 

 extensively cultivated in streamsof running water, on a chalky bottom. June. 

 Per. English Water Cress. 



2. N. HIS'PIDUM. 



Stem villous; leaves somewhat villous, runcinate-pinnatifid ; lobes rather 

 obtusely dentate; siliques ovate, tumid, pointed with the style, scarcely more 

 than half as long as the pedicels ; petals scarcely as long as calyx. Stem an- 

 gular, branched, 2 — 3 feet high, with many panicled racemes above. Flowers 

 minute. Siliques very short, on somewhat spreading pedicels. 



7. BARBA'REA. 



Silique columnar, 2 or 4-eornered ; valves concave-carin- 

 ate ; seeds in a single series; calyx equal at base, erect. 



Gr. ip'jci), to cure ; from its salutary medicinal effects. Leaves lyratc-pin- 

 natifid. Flowers yellow. 



B. VULGa'RIS. Br. Erysimum vulg. L. 



Lower leaves lyrate, the terminal lobe rotindish ; vpptr leaves obovate, den- 

 tate. Found in old fields, also by brooks. Stems 1 — 2 feet high, smooth, 

 furrowed, branched above. Leaves on clasping stalks, lyrate-piijnate, with 

 large terminal lobes, upper sessile, all with obtuse teeth. Flowers yellow, in 

 terminal racemes. Pods slender, somewhat 4-sided, curved upwards. May — 

 July. Per. Winter Cress. 



